On 12/11/12 01:21, Rune Lillesveen wrote:
> For years Firefox has supported a zoom mode that does relayout the
> page (by changing the viewport size in CSS pixels). I believe Safari
> has supported something similar.
>
> I'm asking whether *that* kind of zoom should affect
> devicePixelRatio and device-pixel-ratio.
>
>
> Yes, I think so.
AFAICT, it doesn't do so in Opera at the moment (12.10, Build 1652, Mac
OS X). I made a simple test page[1] to experiment with zooming, and
Opera resolutely insists it has a ratio of 2.0 (on a Retina display),
regardless of the zoom level.
However, an article[2] several months ago noted that "Turns out Opera's
value depends on the zoom level." I was unable to reproduce this, which
caused me to wonder whether there has been a change to the behavior,
whereby it used to depend on zoom, but no longer does so?
JK
[1] http://people.mozilla.org/~jkew/res/test.html
[2] http://www.quirksmode.org/blog/archives/2012/07/more_about_devi.html